Advances in Pretreatment and Clarification Technologies

Johnson, Clifford H.

doi:10.1016/b978-0-12-382182-9.00029-3

Cited by 16 publications

(17 citation statements)

References 2 publications

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“…Activated carbon has a wide range of applications in reality such as medicine, industry, agriculture, and the environment due to its ability of adsorption and desorption. Activated carbon is known as purified charcoal, treated physically or chemically to generated micro-fissures that vastly increase its SSA, thereby enhancing exposure for adsorption or chemical reactions 11 . Chemical activation usually provides activated carbon with higher SSA than that of activated carbon prepared by physical activation.…”

Section: Today the World's Climate Change Is A Growing Problem Planmentioning

confidence: 99%

Carbonization and H3PO4 activation of fern Dicranopteris linearis and electrochemical properties for electric double layer capacitor electrode

Trang

Tsubota

Takahashi

et al. 2020

Sci Rep

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Today, the world’s climate change is a growing problem, plant carbon sequestration is one of the effective ways to mitigate climate change by reducing greenhouse gases, mostly carbon gases. Dicranopteris linearis (D. linearis), a common fern species in the tropic or subtropic ecoregions, has been recently recognized as a potential feedstock to produce highly porous biochar. This study aims to enhance the specific surface area (SSA) and pore volumes of biochars derived from the D. linearis by H3PO4 activation and examine electrical properties of the activated biochars and their possible usage for the electric double-layer capacitor (EDLC) electrode. The treated raw fern was activated with H3PO4 85% by the three different mixing ratios 1:0, 1:1, and 1:3 (w/w) and then pyrolysis under N2 flow maintained at 500 °C for 1 h. The performance as the electrode for an EDLC was evaluated in 1 mol L−1 H2SO4 solution for the H3PO4-activated samples. The SSA and pore volumes were drastically increased after activation. The maximum SSA and pore volume were 1212 m2 g−1 and 1.43 cm3 g−1, respectively for the biochar activated at 400 °C with a weight mixing ratio 1:3 (w/w) between the fern and H3PO4 acid while these values of the biochar at 400 °C were 12 m2 g−1 and 0.02 cm3 g−1, respectively. The biochar activated at 600 °C with the mixing ratio 1:1 (w/w) showed the maximum capacitance value, ca. 108 F g−1 at 1 mV s−1. The activation using H3PO4 showed a positive tendency to enhance electrochemical properties and it could be a premise toward a higher performance of EDLC from the D. linearis derived activated biochar.

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Section: Today the World's Climate Change Is A Growing Problem Planmentioning

confidence: 99%

Carbonization and H3PO4 activation of fern Dicranopteris linearis and electrochemical properties for electric double layer capacitor electrode

Trang

Tsubota

Takahashi

et al. 2020

Sci Rep

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“…Worldwide consumption of commercial activated carbon for wastewater treatment has increased extensively [ 11 ]. In industrialized countries, commercial activated carbon use for water treatment accounts for more than 70% of the total demand [ 12 ]. However, commercially available activated carbons are generally overpriced, leading to extensive research for cheaper alternative adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Cu(II) Adsorption from an Aqueous Solution Using an Artificial Neural Network (ANN)

et al. 2020

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This research optimized the adsorption performance of rice husk char (RHC4) for copper (Cu(II)) from an aqueous solution. Various physicochemical analyses such as Fourier transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FESEM), carbon, hydrogen, nitrogen, and sulfur (CHNS) analysis, Brunauer–Emmett–Teller (BET) surface area analysis, bulk density (g/mL), ash content (%), pH, and pHZPC were performed to determine the characteristics of RHC4. The effects of operating variables such as the influences of aqueous pH, contact time, Cu(II) concentration, and doses of RHC4 on adsorption were studied. The maximum adsorption was achieved at 120 min of contact time, pH 6, and at 8 g/L of RHC4 dose. The prediction of percentage Cu(II) adsorption was investigated via an artificial neural network (ANN). The Fletcher–Reeves conjugate gradient backpropagation (BP) algorithm was the best fit among all of the tested algorithms (mean squared error (MSE) of 3.84 and R2 of 0.989). The pseudo-second-order kinetic model fitted well with the experimental data, thus indicating chemical adsorption. The intraparticle analysis showed that the adsorption process proceeded by boundary layer adsorption initially and by intraparticle diffusion at the later stage. The Langmuir and Freundlich isotherm models interpreted well the adsorption capacity and intensity. The thermodynamic parameters indicated that the adsorption of Cu(II) by RHC4 was spontaneous. The RHC4 adsorption capacity is comparable to other agricultural material-based adsorbents, making RHC4 competent for Cu(II) removal from wastewater.

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“…Therefore, it is anticipated to recover the molecules scale by-products from antibiotic molecules disintegration. The carbon activated filters effectively recover the liquid phase molecules from the water treatment plants (155,156). A recent critical review on water reclamation and reuse technologies suggested the market supply potentials, technologies and bottlenecks (157).…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

“…Because the nanoparticle size (1-100 nm) is less than biological cells, which have a high possibility of subcellular interaction. The recent review article by Friehas et al (156) and other reports (179)(180)(181)(182) narrates the toxicity and phototoxicity of nanoscale photocatalysts. Detailed in-vitro and in vivo studies have demonstrated on toxicity effect of nanoparticles by several researchers in different applications, including water treatment (183)(184)(185).…”

Section: Nanotoxicity Effectmentioning

confidence: 99%

The upsurge of photocatalysts in antibiotic micropollutants treatment: Materials design, recovery, toxicity and bioanalysis

Davies

Cherif

Pazhani

et al. 2021

Journal of Photochemistry and Photobiology C: Photochemistry Re

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Advances in Pretreatment and Clarification Technologies

Cited by 16 publications

References 2 publications

Carbonization and H3PO4 activation of fern Dicranopteris linearis and electrochemical properties for electric double layer capacitor electrode

Carbonization and H3PO4 activation of fern Dicranopteris linearis and electrochemical properties for electric double layer capacitor electrode

Modeling of Cu(II) Adsorption from an Aqueous Solution Using an Artificial Neural Network (ANN)

The upsurge of photocatalysts in antibiotic micropollutants treatment: Materials design, recovery, toxicity and bioanalysis

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